Construction of high-pressure water-taps.



No. 7|3,740. Patented Nov. l8, I902,

W. BRADLEY.

CUNSTRUCTWN OFfHGH PRESSURE WATER TAP&

(Application filed Dec. 3, 1901.1

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WILLIAM BRADLEY, OF SHEFFIELD, ENGLAND.

CONSTRUCTION OF HIGH-PRESSURE WATER-TAPS.

SPECIFICATION forming part of Letters Patent No. 713,740, dated November18, 1902.

Application filed December 3, 1901. Serial No. 84,505. (No model.)

To all whom, it Ina/y concern:

Be it known that I, WILLIAM BRADLEY, a subject of the King of GreatBritain, and a resident of 18 Collegiate Crescent, Sheffield, county ofYork, England, have invented certain new and usefulImprovements in theConstruction of High-Pressure Water-Taps, of which the following is aspecification.

The object of my present invention is to construct a high-pressurewater-tap in which the valve has to close in the opposite direction tothe flow of the water, which' shall open suddenly to its full extent andshall also close suddenly and be retained in both positions by the waterin the body of the tap.

Referring to the drawings which form a part of my specification, Figure1 is a vertical section of an improved tap arranged to be operated byafloat-lever. Fig. 2 is a plan of the upper face of the valve orvalve-head.

Although I have shown the tap as operated by a float-lever, it may bearranged to be operated by hand without departing from the principle ofmy invention.

The body of the tap is made with the waterinletA to open into the lowerpart ofa vertical cylinder B, and this cylinder, which may be open atthe top, receives the valve-rod C, provided with a cup-leather D, whichfits the cylinder above the inlet, and an attached piece E, with whichthe float-lever F engages when turned upon its pivot G. The outlet ismade through the base of the cylinder and is marked H. It is of asmallerdiameter than the cylinder and terminates in adownwardlyprojecting annular lip I, against which the seating J of thevalve is pressed when the tap is closed. The valve-head upon the lowerend of the rod C is located underneath and outside the outlet H and ispreferably surrounded by a skirting K, within which it fits loosely. Itconsists of a seating J, of leather or the like, held within the flangeof a metallic ring N by means of a screw-threaded disk M, which is alsosecured to the valve-rod C. The periphery of the ring is provided withwaterways, such as P, for the passage of the water when the tap is open.A metal disk Q upon the valve-rod rests upon the seating J, and when thevalve is closing it enters the outlet and stifles the flow of watergradually until eventually an equilibrium point is reached. Continuedpressure of the floatlever overcomes this, and the greater pressureupward, due to the larger area of the cylinder, causes the valve toclose suddenly.

As asubstitute for the above I may use the inside edge of the flangeupon the ring N and a corresponding edge R upon the before-mentioned lipI, as shown, or I may use both these stifling devices in combination.

When the tap is closed, the water-pressure inside against thecup-leather D holds the valve to its seat, and when the valve is openthe flow of water through the outlet and over the large area of the headholds it open until subjected to a superior forcenamely, that of thefloat-lever.

Having thus described my invention and how it is carried into practice,what I desire to claim is In a high-pressure tap,the combination withthe casing having a water-inlet, a cylindrical part above the inlet, andan outlet of smaller diameter than said cylindrical part, said outlethaving a suitable exterior valve-seat, of a valve coacting with saidvalve-seat, a valverod extending upward from said valve into thecylindrical part, a cup-leather carried by the said valve-rod within thecylindrical part, a float-lever having a loose connection with saidvalve-rod wherebya limited independent movement of the valve-rod withrelation to the float-lever is permitted, and a part or member movingwith the valve and cooperating with the water-outlet to materiallyrestrict the flow of water when the valve is in proximity to its seat,substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

WVILLIAM BRADLEY.

Witnesses:

Boer. F. DRURY, BERNARD E. DRURY.

